Solar-assisted double-storage-tank cross-season heating device

Abstract

The utility model discloses a solar-assisted double-storage-tank cross-season heating device which comprises a high-temperature heat storage tank which is connected with a solar heat collection field through a pipeline, a low-temperature heat storage tank is connected with an air heat exchanger through a pipeline, the high-temperature heat storage tank and the low-temperature heat storage tank are connected through a pipeline, and the high-temperature heat storage tank and the low-temperature heat storage tank are connected with a buried pipe heat exchanger through a pipeline after being converged. A high-temperature area of the water source heat pump unit is connected with a high-temperature heat storage tank pipeline, and a low-temperature area is connected with a low-temperature heat storage tank pipeline; water in the storage tank is used, influences on underground water resources are avoided, environment temperature is used for heat storage, the number of solar heat collectors is reduced, cost is reduced, a high-quality heat source extracted into the storage tank from soil is used for being lifted by the heat pump unit to become a high-temperature heat source to supply heat, the efficiency of a water source heat pump is improved, and power consumption is reduced. In the non-heating season, heat is stored from soil, heat balance of the soil is maintained, solar energy is stored in the non-heating season, solar energy is directly used for heating in the heating season, and the solar energy is utilized all year round.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of double-storage tank cross-seasonal heating device for solar auxiliary, and it is related to heating technical field. BACKGROUND

[0002] Solar heating is gradually popularizing. Since solar energy is intermittent, it cannot guarantee continuous heat supply at night or on rainy days, resulting in poor stability of heating.

[0003] Although ground source heat pumps and water source heat pumps are applied, ground source heat pumps are suitable for areas where the heat generated by cooling and heating load is balanced with the heat taken, otherwise the system will lose the functions of refrigeration and heating due to soil temperature imbalance after long-term operation. The use of water source heat pumps must comply with the water use policy of China. First of all, the local water source situation must be understood, and the water use scheme must be determined after a full investigation of the water source situation. If groundwater is used, the water recharge problem must be considered, and the recharge method should be considered in combination with the local geological conditions to avoid ecological pollution, so there are certain limitations.

[0004] Nowadays, there are large-scale heat storage water tanks, underground aquifer heat storage, and phase change material heat storage in heat storage technology. Large-scale heat storage water tanks require large water tanks and excavation of earthwork for foundation making. Generally, soil backfilling is used to achieve water tank heat preservation, which is easy to cause high cost and inconvenient maintenance. Underground aquifer heat storage has high requirements for geological conditions and is easy to affect groundwater resources. Phase change material heat storage has high cost.

[0005] In the process of continuous development of solar energy utilization, how to improve the heat collection efficiency of solar energy has been fully worked on in terms of reflector manufacturing process and improvement of system support precision, but how to effectively utilize the temperature in the environment is easily ignored. SUMMARY

[0006] The utility model provides a kind of double-storage tank cross-seasonal heating device for solar auxiliary to overcome the defects of discontinuity of solar heating and high system cost in the prior art.

[0007] To solve the above technical problems, the utility model provides the following technical scheme:

[0008] The utility model discloses a kind of double-storage tank cross-seasonal heating device for solar auxiliary, including high temperature heat storage tank, the high temperature heat storage tank is connected with solar heat collection field pipeline, low temperature heat storage tank is connected with air heat exchanger pipeline, the high temperature heat storage tank is connected with low temperature heat storage tank pipeline, the pipeline after convergence of two and ground buried pipe heat exchanger pipeline connection, the high temperature zone of water source heat pump unit is connected with the high temperature heat storage tank pipeline, and its low temperature zone is connected with the low temperature heat storage tank pipeline.

[0009] Further, the solar heat collecting field is connected with the No.1 solar heat collecting control valve, the No.2 solar heat collecting control valve and the solar heat collecting field circulating pump in sequence through pipes.

[0010] Further, the air heat exchanger is connected with the No.1 air heat exchanger heat collecting control valve, the No.2 air heat exchanger heat collecting control valve and the air heat exchanger circulating pump in sequence through pipes.

[0011] Further, the outflow end of the high-temperature heat storage tank is connected with the outflow end of the low-temperature heat storage tank through the No.1 heat storage control valve pipe and the No.1 heat releasing control valve pipe, and then connected with the ground pipe heat exchanger through the ground pipe heat exchange circulating pump.

[0012] Further, the pipe after the ground pipe heat exchanger is branched, one branch is connected with the No.2 heat storage control valve and connected with the inflow end of the high-temperature heat storage tank, and the other branch is connected with the No.2 heat releasing control valve and connected with the inflow end of the low-temperature heat storage tank.

[0013] Further, the high-temperature area of the water source heat pump unit is connected with the No.2 heat pump unit high-temperature side control valve, the high-temperature heat storage tank, the No.1 heat pump unit high-temperature side control valve and the water source heat pump unit high-temperature side circulating pump in sequence through pipes.

[0014] Further, the low-temperature side of the water source heat pump unit is connected with the No.2 heat pump unit low-temperature side control valve, the low-temperature heat storage tank, the No.1 heat pump unit low-temperature side control valve and the water source heat pump unit low-temperature side circulating pump in sequence through pipes.

[0015] Further, the inlet of the heating circulating pump is connected with the No.1 heating control valve and the high-temperature heat storage tank in sequence through pipes, and the outlet is connected with the inlet of the heating area, one end of the No.2 heating control valve is connected with the high-temperature heat storage tank, and the other end is connected with the outlet of the heating area to form a heating circulation loop.

[0016] The beneficial effects achieved by the utility model are as follows: heating continuity, soil heat storage in non-heating season, soil becomes a stable heat source for providing heat in heating season; without making large water tanks and excavating soil to make foundation, avoiding using a large amount of water to store heat; since water in the storage tank is used, the influence on underground water resources is avoided; without using expensive heat storage materials; using environmental temperature to store heat, reducing the number of solar heat collectors to reduce cost; using the high-quality heat source extracted from soil to the storage tank to become high-temperature heat source through the heat pump unit to provide heating, improving the water source heat pump efficiency, reducing power consumption, and maintaining the heat balance of soil in non-heating season and taking heat from soil in heating season; solar heat storage in non-heating season and direct solar heating in heating season, realizing the whole year utilization of solar energy. BRIEF DESCRIPTION OF DRAWINGS

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] In the diagram: 1. High-temperature heat storage tank; 2. Low-temperature heat storage tank; 21. Solar collector circulation pump; 22. Air heat exchanger circulation pump; 23. Buried pipe heat exchanger circulation pump; 24. Low-temperature side circulation pump of water source heat pump unit; 25. High-temperature side circulation pump of water source heat pump unit; 26. Heating circulation pump; 3. Solar collector field; 31. Solar collector control valve No. 1; 32. Solar collector control valve No. 2; 33. Air heat exchanger control valve No. 1; 34. Air heat exchanger control valve No. 2 35. Heat control valve; 36. Heat release control valve No. 1; 37. Heat release control valve No. 2; 38. Low temperature side control valve of heat pump unit No. 1; 39. Low temperature side control valve of heat pump unit No. 2; 40. High temperature side control valve of heat pump unit No. 2; 4. Air heat exchanger; 41. Heat storage control valve No. 1; 42. Heat storage control valve No. 2; 43. Heating control valve No. 1; 44. Heating control valve No. 2; 5. Buried pipe heat exchanger; 6. Water source heat pump unit. Detailed Implementation

[0020] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0021] Example 1

[0022] like Figure 1 As shown, a solar-assisted dual-tank interseasonal heating device includes a high-temperature heat storage tank 1, which is connected to a solar collector field 3 via a pipeline; a low-temperature heat storage tank 2, which is connected to an air heat exchanger 4 via a pipeline; a high-temperature heat storage tank 1 and a low-temperature heat storage tank 2 via a pipeline; the combined pipeline of the two tanks is connected to a buried pipe heat exchanger 5; the high-temperature zone of a water source heat pump unit 6 is connected to the high-temperature heat storage tank 1 via a pipeline, and its low-temperature zone is connected to the low-temperature heat storage tank 2 via a pipeline.

[0023] The solar collector field 3 is connected in sequence to solar collector control valve 31 (No. 1), solar collector control valve 32 (No. 2), and solar collector circulation pump 21 via pipelines.

[0024] The air heat exchanger 4 is connected in sequence to the heat collection control valve 33 of the No. 1 air heat exchanger, the heat collection control valve 34 of the No. 2 air heat exchanger, and the air heat exchanger circulation pump 22 via pipelines.

[0025] The outflow end of the high-temperature heat storage tank 1 is connected with the outflow end of the low-temperature heat storage tank 2 through a pipeline of the No. 1 heat storage control valve 41 and a pipeline of the No. 1 heat release control valve 35, and then connected with the ground pipe heat exchanger 5 through the ground pipe heat exchange circulating pump 23.

[0026] The pipeline after the ground pipe heat exchanger 5 is branched, one branch is connected with the No. 2 heat storage control valve 42 and connected with the inflow end of the high-temperature heat storage tank 1, and the other branch is connected with the No. 2 heat release control valve 36 and connected with the inflow end of the low-temperature heat storage tank 2.

[0027] The high-temperature area of the water source heat pump unit 6 is connected with the No. 2 heat pump unit high-temperature side control valve 40, the high-temperature heat storage tank 1, the No. 1 heat pump unit high-temperature side control valve 39 and the water source heat pump unit high-temperature side circulating pump 25 in sequence through pipelines.

[0028] The low-temperature side of the water source heat pump unit 6 is connected with the No. 2 heat pump unit low-temperature side control valve 38, the low-temperature heat storage tank 2, the No. 1 heat pump unit low-temperature side control valve 37 and the water source heat pump unit low-temperature side circulating pump 24 in sequence through pipelines.

[0029] The inlet of the heating circulating pump 26 is connected with the No. 1 heating control valve 43 and the high-temperature heat storage tank 1 in sequence through pipelines, and the outlet is connected with the inlet of the heating area; one end of the No. 2 heating control valve 44 is connected with the high-temperature heat storage tank 1, and the other end is connected with the outlet of the heating area to form a heating circulation loop.

[0030] According to the heating load and the solar energy resource condition of the heating area, the area of the solar heat collection field 3, the number of the air heat exchanger 4 and the ground pipe heat exchanger 5 and the power of the water source heat pump unit 6 are calculated.

[0031] In the non-heating season, the solar heat collection field 3 absorbs the solar heat and transmits the heat to the medium in the pipeline, the medium is circulated by the solar heat collection field circulating pump 21, the heat of the solar energy is extracted to the high-temperature heat storage tank 1 which has stored the medium; the air heat exchanger 4 starts or stops work according to the environment temperature, when the environment temperature is in the working range, the air heat exchanger 4 works, the air heat exchanger circulating pump 22 starts to circulate the medium, the temperature in the environment is extracted to the low-temperature heat storage tank 2 which has stored the medium; when the medium in the low-temperature heat storage tank 2 reaches the set temperature, the water source heat pump unit 6, the water source heat pump unit low-temperature side circulating pump 24 and the water source heat pump unit high-temperature side circulating pump 25 start to work, the heat in the low-temperature heat storage tank 2 is extracted to the high-temperature heat storage tank 1; the No. 1 heat release control valve 35 and the No. 2 heat release control valve 36 are closed, the No. 1 heat storage control valve 41 and the No. 2 heat storage control valve 42 are opened, when the high-temperature heat storage tank 1 reaches the set temperature, the ground pipe heat exchange circulating pump 23 works, the heat in the high-temperature heat storage tank 1 is stored in the soil, and the heat storage process in the non-heating season is completed.

[0032] In the heating season, the air heat exchanger 4 stops working; the No. 1 heat storage control valve 41 and the No. 2 heat storage control valve 42 are closed, the No. 1 heat release control valve 35 and the No. 2 heat release control valve 36 are opened, the ground buried pipe heat exchange circulating pump 23 works, the heat stored in the soil is extracted to the low-temperature heat storage tank 2, when the set temperature is reached, the ground buried pipe heat exchange circulating pump 23 stops; the heat absorbed by the solar heat collection field 3 is extracted to the high-temperature heat storage tank 1, when the high-temperature heat storage tank 1 reaches the set temperature, the heating circulating pump 26 works to heat the heating area; when the heat absorbed by the solar heat collection field 3 cannot reach the heating temperature, the water source heat pump unit 6, the water source heat pump unit low-temperature side circulating pump 24 and the water source heat pump unit high-temperature side circulating pump 25 start working, the higher quality heat source in the low-temperature heat storage tank 2 is lifted through the water source heat pump unit 6 and extracted to the high-temperature heat storage tank 1, so that the temperature of the high-temperature heat storage tank 1 always meets the heating demand.

[0033] It should be noted that the above only describes the preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can modify the technical solutions described in the foregoing embodiments or make equivalent replacements to some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application. The terms used in the description of the present application are only used to describe the specific embodiments and are not intended to limit the exemplary embodiments according to the present application. In order to facilitate description, the sizes of the parts shown in the drawings are not drawn in accordance with the actual proportional relationship. The known technologies, methods and devices may not be discussed in detail, but in appropriate cases, the technologies, methods and devices should be considered as part of the authorized description. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments can have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0034] It should be noted that the terms "first", "second" and the like in the description and in the claims of the present application are used for distinguishing between similar objects and not necessarily for describing a specific sequential or chronological order. It is to be understood that the data so distinguished can occur in any sequence. Hence, without departing from the scope of the present application, the data used in "first", "second", etc. can be interchanged with each other. The terms "and / or" and / or "or" as used herein link together alternative language alternatives and are understood to mean that at least one of the alternatives is present and that the alternatives are to be taken together. The term "comprises the possibility of comprising additional elements or steps not listed after the term comprises.

[0035] It should be noted that the terms "front", "rear", "upper", "lower", "left", "right", "horizontal", "vertical", "top", "bottom", and the like as used in this description and in the claims of the present application are used for the purpose of illustration and description and are not intended to limit the scope of the present application to a particular orientation or configuration, unless otherwise indicated. The terms "inner", "outer" refer to the inner and outer contours of the components themselves.

Claims

1. A solar-assisted dual-tank interseasonal heating device, characterized in that, It includes a high-temperature heat storage tank, which is connected to the solar collector field pipeline; a low-temperature heat storage tank is connected to the air heat exchanger pipeline; the high-temperature heat storage tank and the low-temperature heat storage tank are connected to each other; the combined pipeline is connected to the buried pipe heat exchanger pipeline; the high-temperature zone of the water source heat pump unit is connected to the high-temperature heat storage tank pipeline, and its low-temperature zone is connected to the low-temperature heat storage tank pipeline.

2. The solar-assisted dual-tank interseasonal heating device according to claim 1, characterized in that, The solar collector field is sequentially connected to solar collector control valve No. 1, solar collector control valve No. 2, and solar collector field circulation pump via pipelines.

3. The solar-assisted dual-tank interseasonal heating device according to claim 1, characterized in that, The air heat exchanger is connected in sequence to the heat collection control valve of air heat exchanger No. 1, the heat collection control valve of air heat exchanger No. 2, and the air heat exchanger circulation pump through pipelines.

4. The solar-assisted dual-tank interseasonal heating device according to claim 1, characterized in that, The outflow from the high-temperature heat storage tank is connected to the outflow from the low-temperature heat storage tank via the No. 1 heat storage control valve pipeline and then to the buried pipe heat exchanger via the buried pipe heat exchange circulation pump.

5. The solar-assisted dual-tank interseasonal heating device according to claim 1, characterized in that, After exiting the buried pipe heat exchanger, the pipeline has branches. One branch is connected to the No. 2 heat storage control valve and enters the inflow end of the high-temperature heat storage tank, while the other branch is connected to the No. 2 heat release control valve and enters the inflow end of the low-temperature heat storage tank.

6. The solar-assisted dual-tank interseasonal heating device according to claim 1, characterized in that, The high-temperature zone of the water source heat pump unit is sequentially connected to the high-temperature side control valve of heat pump unit No. 2, the high-temperature heat storage tank, the high-temperature side control valve of heat pump unit No. 1, and the high-temperature side circulation pump of the water source heat pump unit through pipelines.

7. The solar-assisted dual-tank interseasonal heating device according to claim 1, characterized in that, The low-temperature side of the water source heat pump unit is sequentially connected to the low-temperature side control valve of heat pump unit No. 2, the low-temperature heat storage tank, the low-temperature side control valve of heat pump unit No. 1, and the low-temperature side circulation pump of the water source heat pump unit through pipelines.

8. The solar-assisted dual-tank interseasonal heating device according to claim 1, characterized in that, The inlet of the heating circulation pump is connected to the No. 1 heating control valve and the high-temperature heat storage tank in sequence via pipelines. Its outlet is connected to the inlet of the heating area. One end of the No. 2 heating control valve is connected to the high-temperature heat storage tank, and the other end is connected to the outlet of the heating area to form a heating circulation loop.

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